Question

2. Two angles of a quadrilateral are 68° and 76º. If the other two angles are in the ratio 5 : 7 ,
find the measure of each of them.​

Answer 1

Answer:

let 5:7

5x and 7x

68+76+5x+ 7x=360°

144+12x=360°

12x=360-144

x=216÷12

x=18

5x= 5×18

5x= 90°

7x= 7×18

7x= 126°

Answer 2

5x+7x=180

12x=180

X=15

5 (15)=75

7 (15)=105